Understanding the Scenario:

The requirement is to collect structured feedback from a large user base.

The method should allow users to select predefined answers, making the process scalable and results analyzable.

Why Quantitative Questionnaires?

Quantitative questionnaires are structured tools with predefined answers, ideal for efficiently gathering measurable data from a large group.

The results can be statistically analyzed to identify trends and commonalities, aiding in defining clear acceptance criteria.

Eliminating Other Options:

B. Qualitative Questionnaires: These involve open-ended responses, which are harder to standardize and analyze, especially for large user groups.

C. Quantitative Interviews: These require individual interaction, making them less efficient for engaging large groups.

D. Qualitative Interviews: These are exploratory and subjective, not suitable for structured data collection or defining clear criteria.

References:Aligned with ISTQB Advanced Agile Technical Tester objectives, which recommend using structured elicitation methods like quantitative questionnaires for large-scale feedback.